Q: What are the prime factors of the number 176,928?

 A: 2, 3, 19, 97

Why are those the prime factors of the number 176,928?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 176,928

176,928
Factor Arrows
288,464
Factor Arrows
244,232
Factor Arrows
222,116
Factor Arrows
211,058
Factor Arrows
25,529
Factor Arrows
31,843
Factor Arrows
1997

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 19, 97

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 19 x 97 = 176,928

This can also be written as 25 x 31 x 191 x 971 = 176,928

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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